V-type engine frame



Dec. 15, 1936. a. J. WOHANKA V-TYPE ENGINE FRAME Filed June 15, 19255 INVENTOR ATTOR Y8 Patented Dec. 15,. 1936 ATES "tsp

PATENT Fries ll-TYPE ENGINE FRABIE Application June 15, 1935, Serial No. 26,730

8 Claims.

The invention relates to V-type combustion engines and consists in a new type of frame construction for such engines, providing unusual strength and rigidity with minimum weight per horse-power, being particularly suitable for twocycle port-scavanged engines. The principle of the new construction is shown by way of example in the accompanying drawing, wherein Fig. 1 is a vertical transverse section on line I---I of Fig. 2, and

Fig. 2 is a plan view in the direction of the arrows IIII of Fig. l.

The new frame is composed of similar cylinder blocks each containing several combustion spaces or cylinders, and symmetrically set at a V-angle of 45 more or less. Each block is constituted of substantially flat longitudinal side walls I and 2 connected at their tops by a top plate 3, and between adjacent cylinders by cross partitions 4, as well as by the port passage belts 5, all as will be plain from the drawing. The detail construction of the cylinder blocks is not of importance to the present invention, it being noted that the cylinders proper of any appropriate number, occupy the circular openings 6 and are intended to be covered'by cylinder heads not sho n but bolted to the top plate 3.- The frame is shown as formed of a single casting but may be in parts welded or otherwise united, as preferred.

According to this invention the two angularlyrelated cylinder blocks are cross-bonded each to the other by a number of vertical cross plates, transepting the trough between them and uniting their longitudinal walls into a structure which is essentially that of a girder. There is one set of such cross plates, marked 1, aligned with the cross partitions 4 of the right- -hand cylinder block and another set, 8, aligned with the cross partitions 4 of the left-hand cylinder block. Owing to the offset of opposing cylinders, necessary for the accommodation of their connecting rods on common crank-pins, the cross partitions 4 of the opposing blocks are not in common planes and the corresponding cross plates 1 and 8 overlap each other, in the trough, being spaced from each other by a short distance in each case corresponding to the amount of ofiset. The cross plates of both sets are prefmg angularly-related cylinder blocks forming a 50 erably flanged along their top edges, as indicated at l and 8 respectively. and such top edges are sloped downwardly from one cylinder block toward the other, that is to say, the flanges I on the plates 1 which are aligned with the cross partitions 4 of the right-hand block slope down- (Cl. l21194) wardly to points of connection with the wall of the other block and similarly the top flanges 8 or the cross plates 8 slope from the left block to points low down on the right block. In both cases the points of connection just referred to are located below the rows of openings 9 which I lead from the trough into the cylinder ports.

It is preferable that the cross plates of each pair be connected to each other where they overlap in the trough and to this end the top flange 10 of one plateis extended as a fillet to the adjacent plate. The fillets are marked 1 and 8 respectively. Also recesses or apertures III are formed in the cross plates 1 and 8 at the bottom of the trough which allow for draining the trough when necessary through the drain hole marked II in one of the end walls.

The girder system constituted, as above described, by the longitudinal angularly-related block walls and the transverse cross plates, each a virtual continuation of a cross partition 4, and all interconnected, is exceptionally wall adapted to resist the torsional strains that occur in V- type combustion engines, and constitutes an important factor in the adaptation of Diesel-type engines to vehicular propulsion where a low weight-power ratio is required.

I claim:

1. A frame for V-type combustion engines comprising angularly-related cylinder blocks n forming a. trough between them, each having continuous longitudinal walls bounding said trough, and a series of vertical cross plates in the trough uniting said longitudinal walls, said cross plates being respectively secured to said walls for a considerable portion of their height, I and forming therewith a girder structure extending the length of the engine.

2. frame for V-type combustion engines comprising angularly-related cylinder blocks 40 each containing a plurality of cylinders and each having inner and outer longitudinal walls 00- I extensive with the length of the engine, vertical cross partitions joining the walls of each block between cylinders, vertical cross plates in the 5 trough between said blocks uniting said inner walls and connected thereto in positions substantially aligned with said cross partitions.

3. A V-type frame for combustion engines havtrough between them, each block containing a plurality of cylinders and composed of longitudinal inner and outer walls with vertical cross partitions between the cylinders, vertical cross plates in the trough uniting the proximate block walls,

and located in alignment with the cross partitions of each block, and means for uniting adjacent cross plates to each other.

4. A frame for V-type combustion engines comprising angularly-related cylinder blocks each containing a plurality of cylinders and having inner and outer longitudinal walls, vertical cross partitions Joining the walls of each block between cylinders, two sets of cross plates in the trough between said blocks uniting the proximate walls thereof and connected thereto in positions substantially aligned with said cross partitions, the top edges of the cross plates of each set sloping downwards to their connection with the opposite wall.

5. A V-type frame for combustion engines comprising angularly-related cylinder blocks each containing a plurality of cylinders and each constituted of longitudinal inner and outer walls extending the length of the blocks, the inner walls forming a trough and being provided with port openings to their respective cylinders, cross plates bridging said trough and connecting said blocks, each cross plate extending from a point relatively high on one of said walls to a point below the port opening in the opposite wall.

6. A V-type frame for combustion engines having angularly-related cylinder blocks each containing a plurality of cylinders and composed of longitudinal jacket walls forming a trough space between them, two sets of vertical cross plates uniting the proximate walls of the blocks and provided with top flanges, the top flange of each set sloping downwards toward the opposite wall. and joined in the trough to the adjacent plates of the other set.

'7. A V-type frame for combustion engines comprising angularly-related cylinder blocks each containing a plurality of cylinders and each constituted of longitudinal inner and outer walls, the inner walls being provided with port openings to their respective cylinders, two sets of cross plates bridging said trough space and connecting said blocks, each set extending irom one of said walls to points below the port openings in the opposite wall.

8. A V-type frame for combustion engines comprising angularly-related cylinder blocks I each containing a plurality of cylinders and constituted oi longitudinal inner and outer walls with cross partitions connecting said walls between cylinders, the inner block walls being provided with port openings to their respective cylinders, two sets of cross plates bridging the trough space between said blocks and substantially aligned with said cross partitions, the cross plates of each set extending from one block wall to points below the port openings in the opposite wall.

GEORGE J. WOHANKA. 

